Now that I have a character modeled, I tinkered tonight with Lightwave to see what it would take to build scenery geometry. After some false starts, I managed to build a small shop for the Apothecary from Sacraments. I went for a kind of cartoony style, both because it's easier (and thus more likely I'd be able to actually finish a project with it) and because I think it would be a pretty cool look for the game. Here's Luthien standing in front of the Apothecary shop (click for larger version):
This screenshot is taken from within the game engine, so it would actually look like that.